[release/6.0-rc2] Generic Math Preview - Use correct NumberStyle when parsing double and float

[github-actions]

Backport of #59205 to release/6.0-rc2

/cc @tannergooding @7rakir

Customer Impact

Customers using the new generic math preview feature will not be able to use IParseable<float>, IParseable<double> or IParseable<Half> and have it work for anything except strings containing integers.

They would need to fallback to the parse methods exposed by INumber<T> that take a NumberStyles instead.

Testing

Additional tests were duplicated and updated to explicitly cover the generic math scenario.

Risk

Low. This is a small fix for a preview API that requires explicit opt-in to consume.

[ghost]

Tagging subscribers to this area: @dotnet/area-system-numerics
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Backport of #59205 to release/6.0-rc2

/cc @tannergooding @7rakir

Customer Impact

Testing

Risk

Author:	github-actions[bot]
Assignees:	-
Labels:	area-System.Numerics
Milestone:	-

[tannergooding]

CC. @jeffhandley, @danmoseley, this is a dupe of #59349 but for RC2 as suggested by Jeff.

[danmoseley]

@lewing docker seems to have been killed here. known issue?

2021-09-20T20:13:01.3886121Z    "/usr/local/emscripten/emsdk/node/14.15.5_64bit/bin/node" /usr/local/emscripten/emsdk/upstream/emscripten/src/compiler.js /tmp/tmpo2pt6d0q.txt
2021-09-20T20:13:01.5143286Z    "/usr/local/emscripten/emsdk/node/14.15.5_64bit/bin/node" /usr/local/emscripten/emsdk/upstream/emscripten/src/compiler.js /tmp/tmp435as1da.txt
2021-09-20T20:13:01.6391861Z    "/usr/local/emscripten/emsdk/node/14.15.5_64bit/bin/node" /usr/local/emscripten/emsdk/upstream/emscripten/src/compiler.js /tmp/tmp6cxoxgqq.txt
2021-09-20T20:13:01.7098581Z    "/usr/local/emscripten/emsdk/node/14.15.5_64bit/bin/node" /usr/local/emscripten/emsdk/upstream/emscripten/src/compiler.js /tmp/tmpx9tb7leh.txt
2021-09-20T20:13:02.0118480Z    "/usr/local/emscripten/emsdk/upstream/bin/wasm-opt" --post-emscripten --no-exit-runtime -Oz --low-memory-unused --zero-filled-memory --strip-producers /__w/1/s/artifacts/obj/mono/Wasm.BrowserProfile.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -o /__w/1/s/artifacts/obj/mono/Wasm.BrowserProfile.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -g --mvp-features --enable-mutable-globals
2021-09-20T20:13:02.0244129Z    "/usr/local/emscripten/emsdk/upstream/bin/wasm-opt" --post-emscripten --no-exit-runtime -Oz --low-memory-unused --zero-filled-memory --strip-producers /__w/1/s/artifacts/obj/mono/Wasm.Browser.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -o /__w/1/s/artifacts/obj/mono/Wasm.Browser.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -g --mvp-features --enable-mutable-globals
2021-09-20T20:13:02.0263226Z    "/usr/local/emscripten/emsdk/upstream/bin/wasm-opt" --post-emscripten --no-exit-runtime -Oz --low-memory-unused --zero-filled-memory --strip-producers /__w/1/s/artifacts/obj/mono/Wasm.Console.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -o /__w/1/s/artifacts/obj/mono/Wasm.Console.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -g --mvp-features --enable-mutable-globals
2021-09-20T20:13:02.0487053Z    "/usr/local/emscripten/emsdk/upstream/bin/wasm-opt" --post-emscripten --no-exit-runtime -Oz --low-memory-unused --zero-filled-memory --strip-producers /__w/1/s/artifacts/obj/mono/Wasm.Browser.Bench.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -o /__w/1/s/artifacts/obj/mono/Wasm.Browser.Bench.Sample/wasm/Release/browser-wasm/wasm/for-publish/dotnet.wasm -g --mvp-features --enable-mutable-globals
2021-09-20T20:13:27.9301742Z ##[error]Exit code 137 returned from process: file name '/usr/bin/docker', arguments 'exec -i -u 1000  -w /home/cloudtest_azpcontainer b83235f59c1bc2ed429f59eee9a2b581dc60a11f552022275f970e2281bc6751 /__a/externals/node/bin/node /__w/_temp/containerHandlerInvoker.js'.
2021-09-20T20:13:27.9868514Z ##[section]Finishing: Build product
``